Polarization separator

Abstract

The invention relates to a polarization separator and a processing method thereof. Metal copper coil on a dielectric material with a certain thickness is corroded into a group of parallel metal gratings, and a common metal bar parallel tensioning method and a metal grating cutting method are replaced. After the design method is adopted, the processing difficulty is greatly reduced, the product yield is improved obviously, the method is simple and easy, and the method provides a novel polarization separator design method.

Description

technical field [0001] The invention belongs to the field of meteorological antennas, and relates to a device in the antenna, in particular to a novel polarization separation device, which can be used in wireless communication fields such as satellite communication, meteorological detection, and radar. Background technique [0002] The polarization separation device used on the antenna is a group of parallel metal grids with a certain diameter and a certain distance. The electromagnetic wave perpendicular to the polarization direction of the grid can pass directly, and the electromagnetic wave perpendicular to the polarization direction of the grid is blocked. The metal grid bars are reflective, thereby achieving polarization separation. The diameter, spacing and parallelism of metal grid strips are directly related to the degree of polarization separation. In the millimeter wave frequency band, it requires higher precision. The existing processing method one is the parall...

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Problems solved by technology

The existing processing method one is the parallel stretching method of metal strips. Specifically, a group of metal wires are stretched into metal grid strips with equal spacing and certain flatness by external force. Uneven strength leads to poor parallelism and flatness. ; The second processing method is the metal plate wire cutting method, specifically cutting a metal plate of a certain thickness into a group of parallel grid bars with a certain width. Because the grid bars are thinner and denser, there are hundreds of grid bars, and the diameter of the grid bars Only 1mm, high requirements on the cutting tool, severe wear and tear, the cutting tool needs to be dismantled frequently, and cracks in the grid section sometimes occur during the processing

It can be seen from the above that the above two methods are complex in processing and low in yield, so it is necessary to design a polarization separation device that is simple in processing and can meet the performance requirements.

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